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%I #10 Apr 24 2021 20:48:12
%S 820,6652,7300,7372,7380,7382,7383,7384,7385,7386,7387,7388,7390,7399,
%T 7408,7417,7426,7435,7444,7462,7543,7624,7705,7786,7867,7948,8110,
%U 8839,9568,10297,11026,11755,12484,13942,20503,27064
%N Numbers having four 1's in base 9.
%t Select[Range[30000],DigitCount[#,9,1]==4&] (* _Harvey P. Dale_, Mar 27 2016 *)
%Y Cf. A007095.
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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